/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:11:27,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:11:27,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:11:27,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:11:27,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:11:27,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:11:27,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:11:27,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:11:27,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:11:27,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:11:27,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:11:27,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:11:27,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:11:27,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:11:27,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:11:27,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:11:27,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:11:27,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:11:27,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:11:27,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:11:27,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:11:27,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:11:27,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:11:27,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:11:27,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:11:27,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:11:27,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:11:27,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:11:27,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:11:27,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:11:27,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:11:27,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:11:27,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:11:27,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:11:27,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:11:27,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:11:27,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:11:27,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:11:27,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:11:27,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:11:27,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:11:27,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 10:11:27,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:11:27,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:11:27,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:11:27,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:11:27,685 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:11:27,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:11:27,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:11:27,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:11:27,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:11:27,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:11:27,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:11:27,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:11:27,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:11:27,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:11:27,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:11:27,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:11:27,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:11:27,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:11:27,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:11:27,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:11:27,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:11:27,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:11:27,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:11:27,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:11:27,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:11:27,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:11:27,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:11:27,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:11:27,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:11:27,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:11:28,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:11:28,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:11:28,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:11:28,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:11:28,034 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:11:28,034 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2020-10-12 10:11:28,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b61ed1898/d742e2969e1c4863851d4b8056b195fb/FLAG8b41b5ba7 [2020-10-12 10:11:28,602 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:11:28,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modsf.c [2020-10-12 10:11:28,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b61ed1898/d742e2969e1c4863851d4b8056b195fb/FLAG8b41b5ba7 [2020-10-12 10:11:28,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b61ed1898/d742e2969e1c4863851d4b8056b195fb [2020-10-12 10:11:28,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:11:28,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:11:29,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:11:29,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:11:29,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:11:29,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:11:28" (1/1) ... [2020-10-12 10:11:29,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cac9c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:29, skipping insertion in model container [2020-10-12 10:11:29,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:11:28" (1/1) ... [2020-10-12 10:11:29,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:11:29,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:11:29,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:11:29,230 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:11:29,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:11:29,367 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:11:29,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:29 WrapperNode [2020-10-12 10:11:29,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:11:29,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:11:29,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:11:29,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:11:29,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:29" (1/1) ... [2020-10-12 10:11:29,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:29" (1/1) ... [2020-10-12 10:11:29,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:29" (1/1) ... [2020-10-12 10:11:29,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:29" (1/1) ... [2020-10-12 10:11:29,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:29" (1/1) ... [2020-10-12 10:11:29,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:29" (1/1) ... [2020-10-12 10:11:29,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:29" (1/1) ... [2020-10-12 10:11:29,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:11:29,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:11:29,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:11:29,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:11:29,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:11:29,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:11:29,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:11:29,468 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:11:29,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:11:29,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:11:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:11:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:11:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:11:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:11:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:11:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 10:11:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:11:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:11:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 10:11:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:11:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:11:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:11:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:11:29,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:11:29,757 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:11:29,758 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-12 10:11:29,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:11:29 BoogieIcfgContainer [2020-10-12 10:11:29,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:11:29,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:11:29,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:11:29,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:11:29,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:11:28" (1/3) ... [2020-10-12 10:11:29,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be11d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:11:29, skipping insertion in model container [2020-10-12 10:11:29,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:29" (2/3) ... [2020-10-12 10:11:29,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be11d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:11:29, skipping insertion in model container [2020-10-12 10:11:29,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:11:29" (3/3) ... [2020-10-12 10:11:29,773 INFO L109 eAbstractionObserver]: Analyzing ICFG modsf.c [2020-10-12 10:11:29,789 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:11:29,796 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:11:29,812 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:11:29,853 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:11:29,853 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:11:29,854 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:11:29,854 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:11:29,854 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:11:29,854 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:11:29,854 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:11:29,855 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:11:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-12 10:11:29,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 10:11:29,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:11:29,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:11:29,894 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:11:29,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:11:29,900 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-10-12 10:11:29,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:11:29,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62929456] [2020-10-12 10:11:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:11:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:30,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:30,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:30,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:30,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:30,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:30,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:30,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:31,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:31,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 10:11:31,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:11:31,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1300 [2020-10-12 10:11:31,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:11:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 10:11:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:11:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 10:11:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:11:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:31,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:31,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:11:31,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:11:31,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:11:31,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:31,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:11:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:11:31,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:11:31,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:11:31,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 10:11:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:31,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:31,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:31,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:31,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:11:31,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:11:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:11:31,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:11:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:11:31,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:11:31,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:11:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:11:31,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62929456] [2020-10-12 10:11:31,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:11:31,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:11:31,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734650509] [2020-10-12 10:11:31,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:11:31,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:11:31,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:11:31,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:11:31,537 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2020-10-12 10:11:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:11:31,841 INFO L93 Difference]: Finished difference Result 103 states and 145 transitions. [2020-10-12 10:11:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:11:31,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-12 10:11:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:11:31,853 INFO L225 Difference]: With dead ends: 103 [2020-10-12 10:11:31,854 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 10:11:31,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:11:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 10:11:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-10-12 10:11:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 10:11:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 10:11:31,908 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-10-12 10:11:31,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:11:31,908 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 10:11:31,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:11:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 10:11:31,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:11:31,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:11:31,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:11:31,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:11:31,911 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:11:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:11:31,912 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-10-12 10:11:31,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:11:31,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285566765] [2020-10-12 10:11:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:11:31,931 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-12 10:11:31,931 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-12 10:11:31,932 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:11:31,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:11:31,955 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-12 10:11:31,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:11:31 BoogieIcfgContainer [2020-10-12 10:11:31,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:11:31,959 INFO L168 Benchmark]: Toolchain (without parser) took 2961.40 ms. Allocated memory was 140.0 MB in the beginning and 235.9 MB in the end (delta: 95.9 MB). Free memory was 103.0 MB in the beginning and 113.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:31,960 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-12 10:11:31,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.11 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.6 MB in the beginning and 181.0 MB in the end (delta: -78.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:31,962 INFO L168 Benchmark]: Boogie Preprocessor took 40.98 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 178.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:31,963 INFO L168 Benchmark]: RCFGBuilder took 352.04 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 160.4 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:31,964 INFO L168 Benchmark]: TraceAbstraction took 2191.24 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 159.5 MB in the beginning and 113.2 MB in the end (delta: 46.3 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:31,968 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.11 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.6 MB in the beginning and 181.0 MB in the end (delta: -78.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.98 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 178.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 352.04 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 160.4 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2191.24 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 159.5 MB in the beginning and 113.2 MB in the end (delta: 46.3 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i